<?php
/**
 * Copyright (C) 2020 Tencent Cloud.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace Discuz\Models;

use Illuminate\Database\Eloquent\Model;

class DzqModel extends Model
{
    private static $instance;
    protected function __clone(){}

    public static function instance() {
        $class = get_called_class();
        if (!isset(self::$instance[$class])) {
            self::$instance[$class] = new static();
        }
        return self::$instance[$class];
    }
}
